I started to upgrade my Slice to Jaunty Jackalope from Intrepid Ibex about 30 minutes ago, only took about 10-15 minutes. It's really quite impressive to simply issue one command, with the minimum of queries about user-modified config files, and within a few minutes you're running a brand new operating system.

Beats the pants off the 40+ minutes it takes to upgrade to another version of Windows!